ABB REQ650 Applications Manual page 228

Section 11
Monitoring
222
• general settings as shown in table 21.
• level supervision of active power as shown in table 22.
• calibration parameters as shown in table 23.
Table 21: General settings parameters for the Measurement function
Setting Short Description
Operation Operation Off/On
PowAmpFact Amplitude factor to scale power
calculations
PowAngComp Angle compensation for phase
shift between measured I & U
Mode Selection of measured current
and voltage
k Low pass filter coefficient for
power measurement, U and I
UGenZeroDb Zero point clamping in % of
Ubase
IGenZeroDb Zero point clamping in % of
Ibase
UBase (set in Base setting for voltage level in
Global base) kV
IBase (set in Base setting for current level in
Global base) A
SBase (set in Base Setting for power base in
Global base) MVA
Table 22: Settings parameters for level supervision
Setting Short Description
PMin
Minimum value
PMax
Minimum value
PZeroDb
Zero point clamping in 0.001% of
range
PRepTyp
Reporting type
PDbRepInt
Cycl: Report interval (s), Db: In
0.001% of range, Int Db: In
0.001%s
Table continues on next page
1MRK 505 383-UEN A
Selected Comments
value
On Function must be
1.000 It can be used during
commissioning to achieve higher
measurement accuracy.
Typically no scaling is required
0.0 It can be used during
commissioning to achieve higher
measurement accuracy.
Typically no angle compensation
is required. As well here required
direction of P & Q measurement
is towards protected object (as
per IED internal default direction)
L1, L2, L3 All three phase-to-earth VT
inputs are available
0.00 Typically no additional filtering is
required
25 Set minimum voltage level to
25%. Voltage below 25% will
force S, P and Q to zero.
3 Set minimum current level to 3%.
Current below 3% will force S, P
and Q to zero.
400.00 Set rated OHL phase-to-phase
voltage
1000 Set rated primary CT current
used for OHL
1000 Set based on rated Power
Selected Comments
value
-100 Minimum expected load
100 Maximum expected load
3000 Set zero point clamping to 60
MW that is, 3% of 200 MW
db Select amplitude deadband
supervision
2000 Set ±Δdb=40 MW that is, 2%
(larger changes than 40 MW will
be reported)
Breaker protection REQ650 2.2 IEC
Application manual
On